In modifying your DRZ400, there are small tweaks and there are game changers. Today, we’re talking about seriously adding power to your DRZ400. How? The Powerbomb Header, an expertly engineered header for your exhaust assembly. This header will supply your engine with superior air flow, resulting in shorter throttle response times and reduced sound output. […]

In modifying your DRZ400, there are small tweaks and there are game changers. Today, we’re talking about seriously adding power to your DRZ400. How? The Powerbomb Header, an expertly engineered header for your exhaust assembly. This header will supply your engine with superior air flow, resulting in shorter throttle response times and reduced sound output. How is this achieved? by disrupting the Bernoulli streamlines that normally run straight out of your exhaust pipe. Bernoulli streamlines are simply the average path that a fluid (in this case exhaust gas) takes, typically found in the center of a pipe. The PowerBomb header acts as a system of nozzles that converts pressure and heat into velocity, much of this energy helps the engine maintain a higher average pressure. Higher average pressure translates into engine efficiency, the engine doesn’t have to spend as much of its “piston power” priming the engine.

Let’s talk about materials, the PowerBomb is made entirely of stainless steel. This means the header will be more corrosion resistant than standard steel, without sacrificing strength. These stainless steel walls are shaped in such a way that the natural flow lines of your exhaust will be disrupted. Don’t worry, just because you’re “disrupting something natural” doesn’t mean that you’re doing something wrong. The streamline deflection technology will make your exhaust pipes much hotter. you may want to consider getting a heat shield. This will depend on how you ride your DRZ400 and what other modifications have been made. The extra heat won’t damage your engine, but it might burn your favorite riding pants. So be careful if you get the PowerBomb, and share your experience with us at DRZparts.com

Pioneering the four stroke expansion chamber concept, the FMF PowerBomb uses its refined design to not only add better flow and response to your dirt bike, but to also lower the sound output. Made of tough stainless steel, this header is ready to dish out the tough performance needed for motocross and enduro.

“Bomb” is precisely positioned to maximize the expansion and contraction of exhaust sonics

Outer chamber allows air to expand, cool and ramp back up at a higher velocity